this, but with a paper bag, not plastic. and at a minimum 3 days.
Also, take heavy duty coffee filters and put baking soda in them, tie them closed with string or something, and place them directly on the machine, on the buttons or anywhere that has absorbed the most odor - probably the plastic parts.
Change the baking soda after the second day and let the 3rd (or 3rd and 4th if you are patient) days be with fresh untainted baking soda. Ideally you would do this on and off, in a bag, for 2 weeks. but you will no longer be ill from the stench in 3-4 days.
what the hell is up with funky digitones? who is stinking up these dn’s??